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New detections of 321 GHz water masers toward late-type stars

Published online by Cambridge University Press:  03 August 2017

Tarja Liljeström ,
Anders Winnberg  and
Roy Booth
Tarja Liljeström
Affiliation:
Helsinki University of Technology, Metsähovi Radio Observatory, Otakaari 5.A, FIN-02150 Espoo, Finland
Anders Winnberg
Affiliation:
Chalmers University of Technology, Onsala Space Observatory, S-43992 Onsala, Sweden
Roy Booth
Affiliation:
Chalmers University of Technology, Onsala Space Observatory, S-43992 Onsala, Sweden

Abstract

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The SEST telescope has been used for a submillimeter water maser survey toward late-type stars. Six new 321 GHz water masers were detected. These, as well as the earlier reported sources, VY CMa and o Cet, were also observed in the vibrationally excited water maser line at 96 GHz. However, only VY CMa and o Cet showed the 96 GHz emission. The line velocity of o Cet is blueshifted, suggesting that the hot water vapor at 96 GHz takes part in the pulsation-shock motion of the Mira variable.

Type
Part 2. Stellar Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 314 - 317
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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